Circular Tree Ring Alternatives: Flexible Edging for Small Beds

Edging a 24-Inch Circular Bed

Scalloped stone tree rings come in fixed sizes; combining 24-inch sections overshoots a small circle. Better options exist for custom curves.

Flexible Edging Materials

• Recycled plastic lumber – Bends to any radius; stake in place.
• Metal landscape edging (steel/aluminum) – Forms smooth curves; durable.
• Extruded concrete curbing – Custom-poured on site; many profiles/colors.

DIY-Friendly Options

• Flexible rubber/plastic edging systems – Easy install, clean curves.
• Bender board (thin redwood/plastic) – Soak to curve; stake every 12 inches.

Caution on Tree Rings

Raised soil/mulch against trunks causes rot, girdling roots, and decline—especially in oaks and mature hardwoods. For new/small trees, keep mulch 6 inches from trunk; use edging at original grade.

Local Sourcing

Search "landscape curbing [your state]" for installed concrete curbing franchises. Many offer free design consultations.